mx51

Building the future of bank-grade payments

Modern infrastructure for merchants and acquirers

mx51 is one of Australia’s fastest-growing fintech companies, offering a white-label payments-as-a-service (PaaS) platform that enables banks, acquirers and merchants to modernise how payments are accepted and managed.

Spun out of a corporate innovation project within Westpac and launched in 2020, the company is now backed by global players like Mastercard and on a mission to simplify the fragmented payments landscape.

At its core, mx51 makes it easier for financial institutions and merchants to innovate without overhauling their existing infrastructure. Its platform supports in-store and online payments, fraud prevention, self-service tools and customer insights – all designed to work seamlessly with legacy systems. The result? A smoother experience for merchants, more capability for acquirers, and faster time to market for innovation.

Why you might want to join A real-world problem with global scale

Serious backing, serious traction – mx51 has raised more than $57 million from investors including Mastercard, Acorn Capital and Artesian, fuelling its expansion plans across Australia and beyond.

A platform with purpose – This isn’t payments for payments' sake. mx51 enables banks and merchants to build better, more customer-focused solutions while navigating the realities of legacy systems.

Modern tech solving old headaches – Payments is a sector where innovation is overdue. mx51 is building modern, flexible infrastructure with the potential to reshape an entire industry.

Led by builders – The founders have deep experience across payments and tech, and are focused on building not just a great product, but a culture where smart, ambitious people can do their best work.